Water Quality in POST, TX (79356)

EPA violation data for public water systems serving ZIP code 79356.

134

Total Violations

Health-Based

Monitoring / Reporting

128

Resolved

What does this mean?

128 of 134 violations have been resolved. 66 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 68 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 6 Population served: 5,828

Violations Detail (134 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 26, 2025	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 26, 2025	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.083	Dec 31, 2024	Resolved	N/A
Nitrate	Health-Based	N/A	13	Dec 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	13	Dec 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	13	Dec 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
TTHM	Health-Based	N/A	0.102	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.102	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.102	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.102	Sep 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.102	Sep 30, 2024	Resolved	N/A
Nitrate	Health-Based	N/A	12	Sep 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12	Sep 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12	Sep 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Public Notice	Monitoring	N/A	N/A	Sep 25, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 25, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 8, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 8, 2024	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Sep 8, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.099	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.099	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.099	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.099	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.099	Jun 30, 2024	Resolved	N/A
Nitrate	Health-Based	N/A	14	Jun 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	14	Jun 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	14	Jun 30, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Public Notice	Monitoring	N/A	N/A	Apr 27, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Apr 27, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.109	Mar 31, 2024	Resolved	N/A
Nitrate	Health-Based	N/A	12	Mar 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12	Mar 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	12	Mar 31, 2024	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
TTHM	Health-Based	N/A	0.084	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.084	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.106	Dec 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 30, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.085	Sep 30, 2023	Resolved	N/A
Nitrate	Health-Based	N/A	11	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Mar 31, 2023	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2023	Resolved	N/A
Nitrate	Health-Based	N/A	11	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Health-Based	N/A	11	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Public Notice	Monitoring	N/A	N/A	Oct 14, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 14, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 29, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Interim Enhanced Surface Water Treatment Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(4)

Public Notice

Apr 30Resolved

Public Notice

Apr 30Resolved

Public Notice

Apr 26Resolved

Public Notice

Apr 26Resolved

2024(50)

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved

Nitrate

Dec 31Resolved